<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title></title>
  <script src="./main.js"></script>
</head>
<body>
    <h1>Hello World!</h1>
    We are using node.js <script>document.write(process.version)</script>,
    nw.js <script>document.write(process.versions['nw'])</script>,
    Chrome <script>document.write(process.versions['chromium'])</script>.
</body>
</html>